thousands of people took to the streets all across the nation today in support of president obama's gun control initiatives. chris mozingo introduces us to demonstrators in washington calling on congress to support the new proposal. >> we need to be heard. >> reporter: lori bennett is not accustomed to events like this. this is her first demonstration. >> "newtown just tore my heart out. honestly didn't feel this emotional since 9- 11." >> reporter: marching behind a banner that says, "when we stand together, we stand a chance". some demonstrators targeted the n-r-a with their signs, while others held up names of gun violence victims. across the street, a counterdemonstration. dick heller was there. >> "it's a dangerous city when people are disarmed." both rallies come a day after vice president joe biden hit the road to promote the president's plan for new firearm laws. several high-powered speakers addressed the crowd at the gun control march. but perhaps the most powerful testimony came from colin goddard. a survivor of the 2007 massacre at virginia tech. >> "we need to challenge any